Dual-Chamber Dispensing Assembly for Precise Dose Control
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Solution Overview
Problem
Existing dropper-type dispensing assemblies lack precise control over the amount of product dispensed, leading to cumbersome operations, product waste, and contamination, especially when multiple small doses are required.
Innovation Solution
A dispensing assembly with a dual-chamber design, where a first fluid is automatically drawn into a first chamber and can be dispensed in exact doses through a secondary piston mechanism, allowing for multiple dispenses without re-drawing from the container.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the user uses a traditional dropper to dispense product, then the structure is simple and easy to manufacture, but the user cannot accurately control the dispensed amount leading to product waste
Solution Approach 1:
The first chamber is divided into a first compartment and a second compartment by a partition, with the first compartment having a first volume and the second compartment having a second volume. This segmentation allows precise control of dispensed amounts by directing fluid flow between compartments through controlled openings.
Solution Approach 2:
The dispensing assembly pre-loads a determined volume of product into the first chamber before dispensing begins. This preliminary action eliminates the need for repeated drawing operations and ensures precise dosage control from the start of the dispensing process.
2Ease of operation
If the user repeatedly inserts and removes the dropper to dispense multiple small doses, then each dose can be controlled, but the operation becomes cumbersome and causes product contamination
Solution Approach 1:
The first chamber is pre-filled with a first volume of product sufficient for multiple dispenses. The partition and controlled openings enable the user to dispense multiple small doses sequentially without removing the dropper from the container, eliminating contamination risk while maintaining ease of operation.
3Measurement precision
If the user squeezes the rubber head to expel air and then releases to suck product, then the mechanism is simple, but the user cannot prevent expelling excess dose or control the dispensed amount
Solution Approach 1:
The chamber is segmented into controlled compartments with specific volumes, and the piston mechanism divides the fluid control into staged movements. This segmentation allows precise measurement and control of dispensed doses through controlled opening and closing of openings at different stages of piston movement.
Solution Approach 2:
The piston position and valve states provide visual and mechanical feedback to the user about the dispensing stage. The controlled openings are positioned to open/close at specific piston positions, giving the user feedback on how much product has been dispensed and preventing excess dosing.
4Productivity
If the dropper is used to transfer product to different locations, then multiple locations can be treated, but the product may leak to undesired locations and the operation is inefficient
Solution Approach 1:
The first chamber is pre-filled with sufficient product volume for multiple dispenses at different locations. The controlled dispensing mechanism maintains precise volume control throughout the process, preventing leakage while enabling efficient treatment of multiple locations without repeated drawing operations.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables users to accurately control and dispense product in precise doses, reducing waste and contamination, and allowing for flexible and convenient use without repetitive drawing from the container.
Implementation Method 1
the pressure of the second fluid in the second chamber forces the first valve to leave the second opening such that the second fluid in the second chamber enters the first chamber
Data Source
AI summary
The present invention relates to a dispensing assembly and a container system including the same. The dispensing assembly comprises: a first chamber of a first volume provided with a first opening sealed by a first valve; a second chamber of a second volume provided with a second opening sealed by the first valve, when the first valve leaves the second opening, the first chamber is in fluid communication with the second chamber, a second valve is provided in the second chamber, when the second valve is open, a second fluid can enter the second chamber; a primary piston slidable along a sidewall of the first chamber and defines the second chamber; a secondary piston located in the second chamber and slidable along a sidewall of the second chamber; and a movable piston rod which can actuate the secondary piston; when the first valve leaves the first opening, the second valve is closed as the piston rod actuates the secondary piston to slide downward, and the pressure of the second fluid in the second chamber forces the first valve to leave the second opening, so that the second fluid in the second chamber enters the first chamber, allowing the first fluid of the second volume to be discharged out from the first chamber.